Heat oven to 400°F. Line a rimmed baking sheet with foil, set a rack inside, and brush the rack with oil.
Cook bacon in a skillet over medium heat until crisp. Drain on paper towels, then chop and let cool.
Halve jalapeños lengthwise. Scoop out seeds and membranes with a small spoon. Wash hands after handling.
Stir cream cheese, cheddar, bacon, green onions, garlic powder, onion powder, smoked paprika, salt, pepper, and lime juice until smooth.
Fill each jalapeño half with the mixture, mounding slightly. Arrange on the prepared rack.
Combine panko with melted butter. Sprinkle evenly over the filled peppers.
Bake until peppers are tender and tops are golden, 16–18 minutes.
Rest 5 minutes before serving so the filling sets slightly.